Please use this identifier to cite or link to this item:
http://hdl.handle.net/2122/6946
DC Field | Value | Language |
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dc.contributor.authorall | Ibanez, J.; University of Granada, Spain | en |
dc.contributor.authorall | Del Pezzo, E.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Almendros, J.; University of Granada, Spain | en |
dc.contributor.authorall | La Rocca, M.; Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.authorall | Alguacil, G.; University of Granada, Spain | en |
dc.contributor.authorall | Ortiz, R.; CSIC, Madrid | en |
dc.contributor.authorall | Garcia, A.; CSIC, Madrid | en |
dc.date.accessioned | 2011-02-24T07:11:11Z | en |
dc.date.available | 2011-02-24T07:11:11Z | en |
dc.date.issued | 2000-06-10 | en |
dc.identifier.uri | http://hdl.handle.net/2122/6946 | en |
dc.description.abstract | Island (Antarctica), recorded during three Antarctic summers (1994- 1995, 1995-1996 and 1996-1997), are analyzed using a dense small-aperture (500 m) seismic array. The visual and spectral classification of the seismic events shows the existence of long-period and hybrid isolated seismic events, and of low-frequency, quasi-monochromatic and spasmodic continuous tremors, All spectra have the highest amplitudes in the frequency band between 1 and 4 Hz, while hybrids and spasmodic tremors have also significant amplitudes in the high-frequency band (4-10 Hz). The array analysis indicates that almost all the well-correlated low-frequency signals share similar array parameters (slowness and back azimuth) and have the same source area, close to the array site. The polarization analysis shows that phases at high-frequency are mostly composed of P waves, and those phases dominated by low frequencies can be interpreted as surface waves. No clear shear waves are evidenced. From the energy evaluation, we have found that the reduced displacement values for surface and body waves are confined in a narrow interval. Volcano-tectonic seismicity is located close to the array, at a depth shallower than 1 km. The wave-field properties of the seismovolcanic signals allow us to assume a unique source model, a shallow resonating fluid-filled crack system at a depth of some hundreds of meters. All of the seismic activity is interpreted as the response of a reasonably stable stationary geothermal process. The differences observed in the back azimuth between low and high frequencies are a near-field effect. A few episodes of the degassification process in an open conduit were observed and modeled with a simple organ pipe. | en |
dc.language.iso | English | en |
dc.publisher.name | American Geophysical Union | en |
dc.relation.ispartof | Journal of Geophysical Research | en |
dc.relation.ispartofseries | B6/105 (2000) | en |
dc.subject | Long Period Events | en |
dc.subject | Deception Island | en |
dc.title | Seismovolcanic signals at Deception Island volcano,Antarctica: Wave field analysis and source modeling | en |
dc.type | article | en |
dc.description.status | Published | en |
dc.type.QualityControl | Peer-reviewed | en |
dc.description.pagenumber | 13905-13931 | en |
dc.subject.INGV | 04. Solid Earth::04.06. Seismology::04.06.08. Volcano seismology | en |
dc.description.obiettivoSpecifico | 3.1. Fisica dei terremoti | en |
dc.description.journalType | JCR Journal | en |
dc.description.fulltext | reserved | en |
dc.contributor.author | Ibanez, J. | en |
dc.contributor.author | Del Pezzo, E. | en |
dc.contributor.author | Almendros, J. | en |
dc.contributor.author | La Rocca, M. | en |
dc.contributor.author | Alguacil, G. | en |
dc.contributor.author | Ortiz, R. | en |
dc.contributor.author | Garcia, A. | en |
dc.contributor.department | University of Granada, Spain | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.department | University of Granada, Spain | en |
dc.contributor.department | Istituto Nazionale di Geofisica e Vulcanologia, Sezione OV, Napoli, Italia | en |
dc.contributor.department | University of Granada, Spain | en |
dc.contributor.department | CSIC, Madrid | en |
dc.contributor.department | CSIC, Madrid | en |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
item.languageiso639-1 | en | - |
item.grantfulltext | restricted | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.fulltext | With Fulltext | - |
crisitem.author.dept | Instituto Andaluz de GeofĂsica, University of Granada, Granada, Spain, | - |
crisitem.author.dept | Istituto Nazionale di Geofisica e Vulcanologia (INGV), Sezione OV, Napoli, Italia | - |
crisitem.author.dept | Instituto Andaluz de Geofisica, Universidad de Granada, Spain | - |
crisitem.author.dept | Univerista della Calabria, Italy | - |
crisitem.author.dept | University of Granada, Spain | - |
crisitem.author.dept | Museo Nacional de Ciencias Naturales, CSIC, Madrid, Spain | - |
crisitem.author.dept | Departamento de VolcanologĂa, Museo Nacional de Ciencias Naturales, CSIC, Madrid, Spain. | - |
crisitem.author.orcid | 0000-0002-9846-8781 | - |
crisitem.author.orcid | 0000-0002-6981-5967 | - |
crisitem.author.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.classification.parent | 04. Solid Earth | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
crisitem.department.parentorg | Istituto Nazionale di Geofisica e Vulcanologia | - |
Appears in Collections: | Article published / in press |
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J Geophys Res-Sol Ea 2000 IBANEZ105-1.pdf | Main Article | 2.79 MB | Adobe PDF |
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